... Short between anode and cathode on the primary side and between collector and emitter on the secondary side. (2) The isolation voltage tester with zero-cross circuit shall be used. (3) The waveform of applied voltage shall be a sine wave. *2. For 10 Seconds Part No. : LTV-814 / 824 / 844 ( M, S, S-TA1 ) BNS-OD-C131/A4 Property of LITE-ON Only SYMBOL 25° ...